JE Pistons Ultra Series 114/117cc Big Bore Piston Kit for Harley 14-24 FL

Elevate your Harley-Davidson's performance with the JE Pistons Ultra Series Piston Kit. Engineered for riders who demand the ultimate in strength and reliability, these pistons are crafted using proprietary aligned grain flow forging technology. This advanced process ensures maximum tensile strength, making them perfectly suited for high-performance environments and demanding riding conditions.

Every aspect of the Ultra Series is designed to optimize engine efficiency and longevity. The pistons feature a ceramic crown coating that acts as a thermal barrier, protecting the component by significantly reducing heat transfer. To ensure a perfect balance between durability and performance, internal and external bracing maintains an optimized strength-to-weight ratio, while 3D undercrown milling removes material from non-critical areas to reduce overall reciprocating mass.

For consistent power delivery, these kits utilize lateral gas ports and an accumulator groove to maintain a superior ring seal, even at high RPM or under boost. The skirt is treated with a specialized coating to minimize friction and wear, while the offset pin design reduces piston rock for quieter engine operation. Designed for a seamless fit, integrated skirt notches provide optimal clearance at the bottom dead center.

• Proprietary aligned grain flow forging technology for maximum tensile strength suited for high performance environments
• Ceramic crown coating protects the piston by reducing heat transfer
• Internal and external bracing maintains optimized strength-to-weight ratio for longevity
• 3D undercrown milling in non-critical areas reduces overall weight
• Lateral gas ports and accumulator groove maintain power-producing ring seal even at high RPM and high boost
• Skirt coating reduces operating friction and wear throughout the life of piston
• Offset pin reduces piston rock and minimizes engine operating noise
• Skirt notches for optimal clearance at the bottom dead center
• Kit includes two pistons, premium ring pack, wrist pins and wire locks

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2022-2024 Harley-Davidson FXLRS Low Rider S 117
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2022-2023 Harley-Davidson FLHXST Street Glide ST
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2022-2023 Harley-Davidson FLTRXST Road Glide ST
2022 Harley-Davidson FXRST Low Rider El Diablo 117
2022 Harley-Davidson Softail Street Bob FXBB
2021-2024 Harley-Davidson FXBBS Street Bob 114
2021 Harley-Davidson FLH Electra Glide Revival
2020-2024 Harley-Davidson FLTRK Road Glide Limited
2020-2024 Harley-Davidson FXST Softail Standard 107
2020-2021 Harley-Davidson FXLRS Low Rider S 114
2019-2022 Harley-Davidson FLHT Electra Glide Standard
2019-2020 Harley-Davidson FXDRS FXDR 114
2018-2024 Harley-Davidson FLTRXSE CVO Road Glide
2018-2024 Harley-Davidson FLHCS Heritage Classic 114
2018-2024 Harley-Davidson FLFBS Fat Boy 114
2018-2021, 2023 Harley-Davidson FXFBS Fat Bob 114
2018-2021 Harley-Davidson FLSB Sport Glide 107
2018-2021 Harley-Davidson FLSL Softail Slim 107
2018-2021 Harley-Davidson FLHC Heritage Classic 107
2018-2020 Harley-Davidson FXLR Low Rider 107
2018-2020 Harley-Davidson FLDE Deluxe 107
2018-2020 Harley-Davidson FXBB Street Bob 107
2018-2020 Harley-Davidson FXBRS Breakout 114
2018-2019 Harley-Davidson FLFB Fat Boy 107
2018-2019 Harley-Davidson FXFB Fat Bob 107 
2018-2019 Harley-Davidson FXBR Breakout 107
2017-2024 Harley-Davidson FLHX Street Glide
2017-2024 Harley-Davidson FLHRXS Road King Special
2017-2024 Harley-Davidson FLHTK Ultra Limited
2017-2024 Harley-Davidson FLTRX Road Glide
2017-2024 Harley-Davidson FLHXSE CVO Street Glide
2017-2024 Harley-Davidson Electra Glide Police FLHTPI
2017-2024 Harley-Davidson Road King Police FLHP
2017-2023 Harley-Davidson FLHXS Street Glide Special
2017-2023 Harley-Davidson FLTRXS Road Glide Special
2017-2022 Harley-Davidson FLHR Road King
2017-2021 Harley-Davidson FLHTKSE CVO Limited
2017-2019 Harley-Davidson FLHTKL Ultra Limited Low
2017-2019 Harley-Davidson FLHTCU Electra Glide Ultra Classic
2017-2019 Harley-Davidson FLTRU Road Glide Ultra